1002210100021 has 16 divisors (see below), whose sum is σ = 1109707619328. Its totient is φ = 899222601600.

The previous prime is 1002210100013. The next prime is 1002210100063. The reversal of 1002210100021 is 1200010122001.

It is a cyclic number.

It is not a de Polignac number, because 1002210100021 - 2³ = 1002210100013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1002210099980 and 1002210100007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002210100081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3324781 + ... + 3613666.

It is an arithmetic number, because the mean of its divisors is an integer number (69356726208).

Almost surely, 2^{1002210100021} is an apocalyptic number.

It is an amenable number.

1002210100021 is a deficient number, since it is larger than the sum of its proper divisors (107497519307).

1002210100021 is a wasteful number, since it uses less digits than its factorization.

1002210100021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6938772.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1002210100021 its reverse (1200010122001), we get a palindrome (2202220222022).

The spelling of 1002210100021 in words is "one trillion, two billion, two hundred ten million, one hundred thousand, twenty-one".